초록 close

Yellow sand (YS) storms were observed about ten times in the Korean peninsula during March and April in 2002. Twenty four hour fine particle (PM2.5) samples were collected onto the 47 mm Teflon-coated quartz filters over 9 days during and after the events using the MiniVol Portable Air Sampler at a flow rate of 5 liters per minute. The highest PM2.5 concentration measured during the YS period was 289 μg/m3, which is 13 times higher than the lowest of the values for the samples collected during the non-yellow sand period. The filter samples were analyzed for inorganic ions using the IC, AAS and Autoanalyzer, and for metals using the ICPMS. The results showed that the concentrations of some inorganic ions (e.g., Ca2± and SO4 2-) and metals (e.g., Fe, Mn) of soil origin were elevated during the yellow sand events.